Re: [Info-gama] Subject: gama-2.18 released [stable]

[Kristian Evers]

Hi Ales

Yes, we are still using gama. It is the only reason I maintain the conda 
packages.
It makes life a lot easier for me.

/Kristian

> -----Oprindelig meddelelse-----
> Fra: Ales Cepek <cepek@gnu.org>
> Sendt: 19. april 2022 21:52
> Til: Kristian Evers <kreve@sdfe.dk>; info-gama <info-gama@gnu.org>
> Emne: Re: SV: [Info-gama] Subject: gama-2.18 released [stable]
> 
> Hi Kristian, nice to hear from you again after long time.  I have just
> now (about an hour ago) found a new bug in gama, buried deep in the old
> code. I will reply  tomorrow, now I must got to be. I am tired, though
> it is not much late yet. Good night.
> 
> Ales
> 
> P.S.By the way, are you still using gama at your work? And Thanks for
> your report!
> 
> On 4/19/22 10:30, Kristian Evers wrote:
> > Alex,
> >
> > Thanks for the new release. When building the conda packages I get
> compile
> > errors on several platforms due to missing imports. I've patched the code
> > locally to ensure that it builds properly but those changes should be 
> > applied
> > upstream in the gama repository. You can find my patches here:
> >
> > https://github.com/conda-forge/gama-feedstock/tree/main/recipe
> >
> > In general, compiling the code across the different platforms supported by
> > conda-forge I see *a lot* of compiler warnings. I would encourage you to
> > bring those down to a minimum as it makes the code more reliable,
> > especially when used on several different platforms.
> >
> > Best regards,
> > Kristian
> >
> >> -----Oprindelig meddelelse-----
> >> Fra: Info-gama <info-gama-bounces+kreve=sdfe.dk@gnu.org> På vegne
> af
> >> Ales Cepek
> >> Sendt: 12. april 2022 18:31
> >> Til: info-gama <info-gama@gnu.org>; info-gnu <info-gnu@gnu.org>
> >> Emne: [Info-gama] Subject: gama-2.18 released [stable]
> >>
> >> About
> >>
> >> GNU Gama package is dedicated to adjustment of geodetic networks. It
> >> is intended for use with traditional geodetic surveyings which are
> >> still used and needed in special measurements (e.g., underground or
> >> high precision engineering measurements) where the Global Positioning
> >> System (GPS) cannot be used.
> >>
> >> Adjustment in local coordinate systems is fully supported by a
> >> command-line program gama-local that adjusts geodetic (free) networks
> >> of observed distances, directions, angles, height differences, 3D
> >> vectors and observed coordinates (coordinates with given
> >> variance-covariance matrix). Adjustment in global coordinate systems
> >> is supported only partly as a gama-g3 program.
> >>
> >> https://www.gnu.org/software/gama/
> >>
> >>
> >> Here are the compressed sources and a GPG detached signature[*]:
> >>   https://ftp.gnu.org/gnu/gama/gama-2.18.tar.gz
> >>   https://ftp.gnu.org/gnu/gama/gama-2.18.tar.gz.sig
> >>
> >> Use a mirror for higher download bandwidth:
> >>   https://ftpmirror.gnu.org/gama/gama-2.18.tar.gz
> >>   https://ftpmirror.gnu.org/gama/gama-2.18.tar.gz.sig
> >>
> >> Here are the SHA1 and SHA256 checksums:
> >>
> >> 94cf28c7e0ef451a9f30b7900816548857e53c3c  gama-2.18.tar.gz
> >> XNi7SmeE4zk81kAHWtIWL7Z1jnTqeAe71y2WuMvgXQ0  gama-2.18.tar.gz
> >>
> >> The SHA256 checksum is base64 encoded, instead of the
> >> hexadecimal encoding that most checksum tools default to.
> >>
> >> [*] Use a .sig file to verify that the corresponding file (without the
> >> .sig suffix) is intact.  First, be sure to download both the .sig file
> >> and the corresponding tarball.  Then, run a command like this:
> >>
> >>   gpg --verify gama-2.18.tar.gz.sig
> >>
> >> If that command fails because you don't have the required public key,
> >> or that public key has expired, try the following commands to update
> >> or refresh it, and then rerun the 'gpg --verify' command.
> >>
> >>   gpg --recv-keys 1b77fc09
> >>
> >>
> >> NEWS
> >>
> >> Changes in release 2.18 (2022-04-09)
> >>
> >> New conversion class K2gkf (lib/krumm) with accompanying program
> >> krumm2gama-local and the testing suite for converting input data
> >> format used in the text book "Geodetic Network Adjustment Examples"
> by
> >> Friedhelm Krumm, Geodätisches Institut Universität Stuttgart, 2020.
> >>
> >> Not all input data in Krumm Format can be converted to GNU Gama,
> >> i.e. to the adjustment program gama-local input XML:
> >>
> >> * scale factor is not implemented in gama-local adjustment
> >>
> >> * gama-local does not enable fixing only x coordinate (or y
> >>   coordinate) for 2D free network to remove singularity. This kind
> >>   of regularization has very little practical meaning. Technically
> >>   it would be possible to enable this feature in gama-local, but it
> >>   is questionable if the outcome would not enable more confusion
> >>   than possible outcome. Adustment should not be dependent on the
> >>   coordinate system used.
> >>
> >> * gama-local does not deduce that an azimuth to the unknown point
> >>   P can be combined with some angle pointing to the P to create a
> >>   new feigned azimuth. This is an interesting feature which may
> >>   be implemented in some future version, namely in the gama-local
> >>   stage of computing approximate coordinates.
> >>
> >> * nonlinear conditions are not implemented in gama-local
> >>
> >> * BLH coordinates are not supported in gama-local
> >>
> >>
> >> _______________________________________________
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